Support and adjustment for speaking movie photocells



March 1, 1932. A. DINA 1,847,643

SUPPORT AND ADJUSTMENT FOR SPEAKING MOVIE PHOTOCELLS Filed March 3l, 1950 4 Sheets-Sheet 2 INVENTOR z/yw/a @ha E Y W ATTORNEY March 1, 1932. A, DlNA SUPPORT AND ADJUSTMENT FOR SPEAKING MOVIE PHOTOCELLS Filed MaICh 3l., 1930 4 SheetS-ShG-el', :5

INVENTOR ayas/a @ma ATTORN EY A. DINA 1,847,643

SUPPORT AND ADJUSTMENT FOR SPEAKING MOVIE PHOTOCELLS March 1, 1932.

Filed March 31, 1950 4 Sheets-Sheet 4 lNyENTOR @agus/0 @//70 BY ATTORNEY Patented Mar. 1, 1932 l .UNITED i AUGUSTO .DINA, or nLIzABE'rmp-NEW" JERSEY, AssIGNon 'ro INTERNATIONAL ifno- `N. Y.. A ooRroRA'TroN' OF'DELAWARE SUPPORT YAND 'xujnrsrnrzN'r1rnon SPEAKING'Movrnfrnoirocnnns Y Application nieafmar'ch e1, 1930. seria1-N0.-44o,2o4.

This invention relates tomotion picture apparatus and fparticularly .to motion .pic-

ture projectors which include mechanismfor transforming striata on the Hlm into sound Y f tas inthe speakingimoving picture projectors im little loss.of.lightefciencyfaspossible.f

f A.. still further objectisto provide simple and efficient means whereby the vrflmdoor may .be moved without ,in any .material manner alfecting the transmission'of light to :the .cell

andthe celllnay be adjusted with respect to :thedoor also withoutloss of thejtransmission of light.` f 7 Further andmore specific objects, features, andadvantages will more clearly appearffrom :330 the detailed description given belowwhen taken lin connection with wthe .accompanying drawings which form part ofthe specification and which 'illustrate one present preferred form ofthe invention. i

In general contemplation Vof the invention,

the cell, the filmgatafjand the film, door are mounted onf a support suitably. fastened o to the usual vpartition or supporting wallwithin theprojection head and insucha manner. that each and every one lmay be adjusted alonglthe support with respect tof each other and the other mechanism on the machine if desired.

' Furthermore 'the `invention` includes.'k improved means whereby the' door and the-cell `mounting while movable are so related and connected that the light passing through lthe ,gateand door to ythecellfis enclosed within alsui'table tube or tunnel "and'isnot lostor ,.12 suitablysupported at their ends in strayed even While and if th'ejd'oorand thecell other. as must be thecase occasionally.

It will. be noted that this invention is .primarily concerned with making the cell mounting andthe mounting of the gate anddoor are moved or 1 adjusted with respect Ato each i with respect to the cell of Vsuch iexibility that lthe .parts rmay i be adjusted and related Vwith the utmost ease anddispatch. Thus theparts 4are .in positionl to Vgive the most efficient results their relation and operation. The present preferred form ofthe invention. is shown .in the drawings, in which, Fig'. lisa side elevation of the preferred embodiment of the. invention; n Fig 2 is aplan viewthereof;

Fig. 3"is a horizontal section in part YtakenV n Fig. is a vertical section taken .on the lino *4 4 of Fig.-2;`and, j i l Fig, 5 isa vertical section in part taken on the'line 5-.5 of.Fig. 2.

As shown`in the,drawings, the rv.invention is applied. to, a motion picture apparatus in theform ofthe projector 'having .a-` central mechanism-supporting wallor 1partition such as 10. Disposedlalong the wall 10 are spaced preferably horizontally disposed rods -11 and o A brackets such as 13 shown in Fig. '1.

vMidway of these `rodsfllj and 12is disposed a lmJtrap-gate memberlc which is provided with collars 15 and 16 forembracing the rods 11 and ,12'and is also preferably fastened to the .partition '10 by means ofthebracket 17.

Adjacentth'is gate V14 which is .generally .iixed'in positiomthere is'disposed amovable door-element 18. This element is provided with collars 19 and 20 which embrace the rods'` .1. 1 and 12 and is adapted to be slid therealong.. k'To move the door 18 it is merely necessary to .turn the 'knob 21 onfshaft '22 the other end of which has Ya gear meshing with a rack on rody 11 altho this detail of constructionis not shown, The normal lposi'- tion of the door 18 is against :the gate 1441s shown in Fig. .1. When the knob 21; is operated, the .door 18 may bemovedaway from the gate 14 and the film removed or threaded .or otherwise fhandled,

v Between thedoor .18 andthe bracket 1-3 there is slidable on the rods 11 and 12 a frame Vmember 23 having collars 24 and 25 embracas 29 and 30. Y

i The cell 27 isprotected and lcovered Vby a casing such as 31 fastened to one face of the frame 23. At the side of the casing 311there is an aperture around which, on the outside of the casing 31, there isdisposed a'doubl-e walled tubular element having annular walls 'such as 32 and 33. This element extendsfrom the casing in the direction of the gate 14 and the door 18, and in alinement with an aperture 34 in the door through whichthe light from'the projection beam passes after ithas passed through the film ywhichpasses between the gate and the door. Fastened to the door and disposed thereon around the aperture 34 is a tube 35 which extends from the door in the direction of thevcell 27. As shown in Fig. 3 the outer end ofthe tube 35 projects to some extent into and between the walls 32 and 33 above mentioned even when the'door is farthest awayfrom the cell 27. Thus there is'provided a constantly closed path for the light lpassing from the door to the cell 27 so that the efficiency of light transmission is not diminished and a portion of the light lost asstray light.v The actionr of the tubular walls 32 and 33 and the tube 35 is telescopic in character altho they do not Y necessarily touch. Because of this there is Vnorundue friction. It may be Vnoted that other forms of apparatus may be employed to protect these lightfrays. l

It will also be noted that the aperture 34 is disposed at the sid-e of the door 18 and thus will be in line withthe side of thefilm where the sound striata are usually located. In order to get thevlamp or cell 27 into exact position with respect to the light beam and its focal point or other opticalV relation, the cell mounting is adjustable as above described. ]t i'sof course desirable'to have the cell 27 as near the door 18 as possible but at the same time it! is necessaryto'move the door away from the gate' 14 to permit ad justment and repair of and threading ofthe film so that the cell 27 has to be 'a certain .distance away from the door. 'Regardless' lof whether the doorl is close to or away from the cell mounting the'light is properly transmitted thereto'becaus'e of the telescopic tubular connection between the cell housing nand the door aperture. Y. Y

- The adjustable mounting of the gate, the door, and the cell housing is very simple and easy to manipulate, and yet the adjustment permits ofk an exactness which allows lvery fine adjustmentsv for precision;` f

yof effort.

Thus there is provided a film trap gate and door as a unitary part ofthe system including a lamp or cell enclosed in a protective casing and associated with the trap through the intermediary of a telescopic tubular passage which remains closed no matter what is the position of the cell with respect to the door and the gate. The elements are preferably mounted on a suitable support on which they are readily adjustable and slidable and the support preferably consists ofaJ pair of simple spacedrods with'which the elements each engage in a slidable manner. Thus the elements can be easily adjusted with respect to the support and each other with a minimum When the door is'moved in its usual operation to or away from the gate the light passing through 4the door to the lamp or cell is nevertheless completely protected.

While the invention Vhas beendescribed in detail and with respect to a present preferred form thereof. it is not to' be limited to such details and forms since many changes and modifications may be made in the invention andthe invention embodied in other forms and modifications without departing from the spirit and scope of the invention in its broadest aspects. Hence it is desired to cover any and all forms and Inodications which may come within the language or scope ofany one or more. ofthe appended claims.

` What is claimed, is,

1.In .a motion picture apparatus, a film trap gate and door, a pair o'frods` a partition on which said rods are horizontally spaced to act as supports, said gate and door slidable along said rods, means on the door to be vmoved and. engaging the rods to move the door along. the rods, a' photo cell slidably dis-- posed on the rods, a tubular member extending' from the cell, an enclosing casing around the cell to whichthe tubular member is attached, a similar tubular member on the door on the face adjacent the cell. said last mentioned tubular member having always, and

independent of the position relatively between the cell and the door. a telescopic relation with the tubular member on the cell to prevent the straving of the light passing Y from the door to the cell.

2. In a talking motion pictureapparatus, a

'mechanism' supporting partition, a sound film trap gate and door, supporting means on the'partition'on which said trap elements are lfilm trap doornand gate, and a photo cell slidably mounted on said rods, means forr temporarily fixing theposition of the gate and the cell on said rods and means for moving the door relatively with respect to the cell and the gate.

4:. In a talking motion picture apparatus, a mechanism supporting partition, a plurality of supporting elements mounted there- .on, a photo-electric cell adjustably mounted Y on said element-s and having an enclosing casing, a sound film trap door slidably mounted n on said elements, and telescopically related means on the door and the casing cooperating to enclose light passing between the door and the cell, and means for moving the door along said elements with respect to the cell.

5. In a talking motion picture apparatus, a mechanism supporting partition, a pair of spaced supporting elements mounted thereon in a line parallel to the sound optical axis, a sound film trap gate and door adjustably mounted on said elements, a photo cell also adjustaloly mounted on said elements, means for clamping the gate and the cell in desired relations, mea-ns for moving the door along said elements With respect to the gate and cell and cooperating means associated With the cell and the door to enclose light passing therebetweenA regardless of the position of the door with respect to the cell and the vate.

AUGUSTO DNA. 

